The world has changed dramatically in recent decades but many argue that the university system has not kept pace. As another academic year begins, if you peek into any introductory college science course you’re likely to find the same scene as you would have twenty years ago: An instructor writing equations on the blackboard while a lecture hall full of students take notes.
To accomplish this, the authors used results from a national web survey of 722 physics faculty who had taught introductory physics in the previous two years. Faculty gave information about their background (such as rank, type of institution, gender, and number of research publications). Then, faculty read through a comprehensive set of 24 research-based instructional techniques in physics and indicated whether they had heard of the technique, whether they’d used it, and whether they were still using it. This provided information about where each faculty member stood in the process of choosing whether to use a new teaching approach.
The authors’ first finding was that most physics faculty (88% of survey participants) know about at least one of these instructional techniques, and most faculty (72% of participants) had tried at least one. However, faculty who chose to respond to the survey may be more likely to use such techniques, so these numbers may over-estimate actual nationwide numbers. Despite this limitation, it does appear that the hard work to disseminate these materials and techniques has indeed paid off, and the word is out.But the clincher came when the researchers looked at discontinuation– about 1/3 of faculty who try one of these strategies stop using it.
Additionally, many assumptions about what might keep faculty from using educational innovations were not borne out by this study. A common idea is that older faculty are less innovative and, if we wait for older faculty to retire, then educational change will naturally follow. However, age (as measured by rank and years of teaching experience) was not correlated with use of instructional techniques, and it also didn’t matter if an instructor was in a teaching-oriented job, what type of institution he/she taught at, the size of the classes they teach, or if they were highly productive researchers. So, one can’t assume that more senior faculty, those more engaged in research, or those teaching large classes can’t or won’t use research-based teaching techniques.
Stephanie Chasteen | EurekAlert!
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22.09.2017 | Forschungszentrum MATHEON ECMath
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
A warming planet
Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
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